<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      body {
        margin: 0;
      }
      ul {
        margin: 0;
        padding: 0;
        list-style: none;
      }
      nav {
        margin: 100px 500px 0;
      }
      a {
        text-decoration: none;
        color: black;
      }

      .dropdown {
        width: 300px;
        height: 100%;
      }

      .burger {
        background-color: beige;
        border-radius: 5px;
      }

      .burger button {
        border: none;
        background-color: transparent;
        width: 100%;
        height: 40px;
        line-height: 40px;
        font-size: 20px;
      }

      .list {
        height: 0;
        overflow: hidden;
      }

      .list {
        background-color: #999;
        border-bottom-left-radius: 5px;
        border-bottom-right-radius: 5px;
      }

      .list .item a {
        display: block;
        padding-left: 15px;
        width: 100%;
        height: 40x;
        line-height: 40px;
        width: 100%;
      }

      .list .item:hover a {
        background-color: #fff;
        opacity: 0.8;
      }
    </style>
  </head>
  <body>
    <nav class="dropdown">
      <div class="burger">
        <button>🍔</button>
      </div>
      <ul class="list">
        <li class="item"><a href="#">website1</a></li>
        <li class="item"><a href="#">website2</a></li>
        <li class="item"><a href="#">website3</a></li>
        <li class="item"><a href="#">website4</a></li>
        <li class="item"><a href="#">website5</a></li>
      </ul>
    </nav>

    <script src="./index.js"></script>
  </body>
</html>
